Abby (Maura Tierney) and her bipolar mom, Maggie (Sally Field), have a tense confrontation just before Thanksgiving. In a less serious but similar vein, Chen (Ming-Na) uses a family Thanksgiving party as an opportunity to reveal her pregnancy to her mother (Nancy Kwan). Back at the ER, Abby barely survives an explosion in Exam Three; Carter (Noah Wyle) searches for a drug addict that has checked out of the hospital too soon; and Greene (Anthony Edwards) is informed of the severity of his current illness. "Rescue Me" is dedicated to the memory of guest star Anthony Lee (here seen in the role of Mr. Floryea), who was killed shortly before the episode aired. ~ Hal Erickson, Rovi